Mad Professor has been designing and releasing pedals from its home in Finland since 2002. Producing both hand-wired and factory-made pedals, Mad Professor has crafted numerous pedal hits, like its Sweet Honey Overdrive, Deep Blue Delay, and its super-unique Golden Cello pedal, among many others. But Mad Professor doesn't just specialize in pedals—it's also dipped its fingers into the amp-making pie, to great effect. Cabs, heads, and combos, like the Old School 21 RT and 51RT, continue the company's legacy of quality gear. Buy new and used Mad Professor amps and pedals on Reverb today.